This interactive lab with full teacher key and PowerPoint (for PC users) and Keynote (for Mac users) presentations for middle school and high school students teaches students the concept of gravity, beginning physics, what function it serves for the earth, earth space systems, why the earth remains in orbit around the sun, practice creating a correct hypothesis, and how to create an original experiment. Only a few common supplies are needed to complete this lab, clay, string, meter sticks. This